Spa Electrical Wiring 4 Guage And 6 Guage

[tjsparky]

I have a spa that is about 95 feet away from the panel. I have a 50AMP breaker in the pannel with a 50 amp GFI quick disconnect. I have 4 guage THHN running from the pannel to the GFI quick disconnect. My question is should I now switch to 6 guage from the GFI quick disconnect to the spa or should I continue on with the 4 guage? I found this piece of information in the spa manual....

"When NEC requires the use of wires larger than #6 (10mm²), install a junction box near the spa and use #6 (10mm²) wire between the junction box and the spa."

In this case would a junction box be the same thing as a GFI quick disconnect?

Thanks for your time.

[Pathfinder]

depending on the length between your disconnect box and the spa you can switch to 6 gauge

[tjsparky]

Even though my disconect is about 8 feet from the spa. It looks like the run would be about 25-30ft. I am thinking about sticking to 4 guage in this case.

[Pathfinder]

you must check to see if the connections on your spa pack actually accepts 4 gauge wire I know our gecko Xm3 packs will accept 4 but its going to be tight on a newer Balboa board

[egbert]

Even though my disconect is about 8 feet from the spa. It looks like the run would be about 25-30ft. I am thinking about sticking to 4 guage in this case.

That would be overkill unless you already have a spool of #4 sitting around. Over a 30 foot run at 240V/50A you would only have a 0.9 volt drop. #6 would still only give you a 1.4 volt drop. #6 THHN is rated at 75A